| 摘要 |
<p>Process for producing non-woven, yet internally cohesive, boron nitride fiber batts, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide (15) is centrifugally spun into strands (23) and attenuated by relative humidity. The fibers (27) are funnelled into a chamber (31) and subjected to a turbulent air flow, which causes random orientation and intertwining of the fibers (27), resulting in multiple mechanical bonds thereamong. The compacted boron oxide fiber bundle thus produced is heated in an anhydrous ammonia atmoshpere to convert boron oxide in the fibers (27) into boron nitride (BN). </p> |
